I love when St. Patrick's Day rolls around in an elementary school, especially in the primary grades where imagination still runs rampant.
In one of the schools I teach in some teachers pretend that a leprechaun visits the classroom and does "silly" things like tipping chairs over, leaving books opened on desks, writing notes on whiteboards and spilling green confetti to make a mess. The little ones go crazy for this stuff! Their imaginations go into hyper-drive and dream up things you never thought possible. All of a sudden kids are screeching they saw the leprechaun run across the room or they hear tiny footsteps on the ceiling. The kids end up spending part of the day trying to find and catch the leprechaun. It's always great fun to watch!